Median annual earnings of respiratory therapy technicians were $36,740 in May 2004. The middle 50 percent earned between $30,490 and $43,830. The lowest 10 percent earned less than $24,640, and the highest 10 percent earned more than $52,280. Median annual earnings of respiratory therapy technicians employed in general medical and surgical hospitals were $36,990 in May 2004.
Source: Bureau of Labor Statistics, U.S. Department of Labor, Occupational Outlook Handbook, 2006-07 Edition